Connect ColorStateList to CAM

ColorStateList recently added an attribute, lStar, that means the
color should have its perceptual luminance adjusted.

The color appearance model library transforms the given color to one
with the desired luminance.

Test: added new test to ColorStateListTest, ran atest locally,
tests passed. (no link, atest/my build is broken, can't upload results)
Bug: 186640057
Change-Id: I5252b7c03d76ec1f0a7ca97cd671e8ea63d4b88b